Quote:
Originally Posted by Spuds
Hey folks. Followed the instructions in the first post to scale my MAF as I was seeing LTFT of +5 to +10. The vgi scaling program worked great for closed loop. Though it resulted in a slightly bumpy scale, my LTFT was down to +-3%.
Open loop scaling, on the other hand was quite wavy, and the transition showed the 3V lump folks were talking about back on page 8 of this thread. I cant seem to follow the logic/conversation and stopped trying a few pages in, but it seemed like it involved having to first get the injectors set correctly?
I know it was discussed in a number of threads back in 2014-ish, but if anyone could explain the consensus reached about why this happens and if I should/how I can get the scaling on the upper end right, I would very much appreciate it.
Just FYI: Stock engine, OFT, and Perrin inlet tube (because sound generator was annoying) in case that matters.
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Don't worry about rescaling pi/di unless you have changed injectors
You will often get a bump around 3v as that's the cl to ol transition. just manually smooth that area. Then recheck the ol fueling